171 | Add to Reading ListSource URL: www.usc.eduLanguage: English - Date: 2013-04-13 17:37:28
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172 | Add to Reading ListSource URL: ei.cornell.eduLanguage: English - Date: 2013-06-12 11:32:32
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173 | Add to Reading ListSource URL: www.tn.govLanguage: English - Date: 2014-07-30 09:58:32
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174 | Add to Reading ListSource URL: www.epa.govLanguage: English - Date: 2014-09-08 11:27:02
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175 | Add to Reading ListSource URL: www.maine.govLanguage: English - Date: 2012-06-29 11:50:22
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176 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2013-09-16 14:19:37
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177 | Add to Reading ListSource URL: www.mass.govLanguage: English - Date: 2013-01-03 15:54:03
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178 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2011-09-16 09:51:26
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179 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2006-08-15 09:13:57
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180 | Add to Reading ListSource URL: www.ecy.wa.govLanguage: English - Date: 2014-07-02 19:38:03
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